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CS 2440 - Computer Science II

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Adding Reversed Numbers

Assigned: May 25, 2004

Due date: Midnight, Saturday May 29, 2004

A reversed number is a number written in arabic numerals but the order
of digits is reversed. The first digit becomes the last and vice versa.
For example, 1245 becomes 5421 when reversed. Note that all leading zeros
are omitted. So, if a number ends in one or more zeros, the zeros are lost
by reversing, e.g., 1200 gives 21. Also note that the reversed number never
has any trailing zeros.
Your task is to add two reversed numbers and output their reversed sum.
Of course, the result is not necessarily unique because any particular
number is a reversed form of several numbers, e.g., 21 could be 12, 120,
or 1200 before reversing. Thus, we must assume that no zeros were lost
by reversing, e.g., assume the original number was 12 in the given example.

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Input

The input consists of N cases. The first line of input contains only the
positive integer N. Each case then follows on separate lines with each
line containing two positive integers separated by space. The two numbers
on each line are to be added.
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Output

For each case, print exactly one line of output containing only one integer,
the reversed sum of the two reversed numbers input. Omit any leading zeros
in the output.
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Sample Input

3

24 1

4358 754

305 794
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Sample Output

34

1998

1